The Last Body Part
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Sarajabe Woolf. The Last Body Part
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Sarajane Woolf
THE LAST BODY PART
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Most of us have four PT glands. They’re tucked behind the thyroid, arranged in pairs on each side of the windpipe in an upper and a lower set. Often the size of a small grain of rice, they can look pear-shaped or flat like a lentil. Their color varies from a grayish white to a reddish brown. Fat can make them look yellow. In any case, their color is not the same as the thyroid’s, which makes the smooth, shiny glands easier for a surgeon to see.
The glands control calcium in the blood. If the level is too low, they secrete a hormone that tells the bones to release calcium. If the level is too high, the glands sit back and wait for it to drop. Just like a heater with a thermostat.
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